• Complex numbers play a significant role in all engineering disciplines, and a good understanding of this topic is necessary. However, it is especially important for the electrical engineer to master this topic.
• Complex numbers can be used to solve quadratics for zeroes. The quadratic formula solves ax2 + bx + c = 0 for the values of x. If the formula provides a negative in the square root, complex numbers can be used to simplify the zero.
• Complex numbers are used by Electrical & Electronic Engineers to define the Alternating Current or AC concept of Impedance, and in Fourier analysis they are used in the processing of radio, telephone and video signals, see this page for more details.
